code: def test_server_callback_value_vs_value_throttled(
      self, bokeh_server_page: BokehServerPage
  ) -> None:
      junk = dict(v=0, vt=0)
      slider = Slider(start=0, end=10, value=1, title="bar", width=300)
  
      def modify_doc(doc):
          plot = Plot(
              height=400,
              width=400,
              x_range=Range1d(0, 1),
              y_range=Range1d(0, 1),
              min_border=0,
          )
  
          def cbv(attr, old, new):
              junk["v"] += 1
  
          def cbvt(attr, old, new):
              junk["vt"] += 1
  
          slider.on_change("value", cbv)
          slider.on_change("value_throttled", cbvt)
          doc.add_root(column(slider, plot))
  
      page = bokeh_server_page(modify_doc)
  
      drag_slider(page.driver, slider, 30, release=False)
      sleep(1)  # noUiSlider does a transition that takes some time
  
      drag_slider(page.driver, slider, 30, release=False)
      sleep(1)  # noUiSlider does a transition that takes some time
  
      drag_slider(page.driver, slider, 30, release=False)
      sleep(1)  # noUiSlider does a transition that takes some time
  
      drag_slider(page.driver, slider, 30, release=True)
      sleep(1)  # noUiSlider does a transition that takes some time
  
      assert junk["v"] == 4
      assert junk["vt"] == 1
  
file_path: bokeh/tests/integration/widgets/test_slider.py
imports: from __future__ import annotations
  import pytest
  from time import sleep
  from bokeh.layouts import column
  from bokeh.models import ColumnDataSource, CustomJS, Plot, Range1d, Scatter, Slider
  from tests.support.plugins.project import BokehModelPage, BokehServerPage
  from tests.support.util.selenium import RECORD, Keys, drag_slider, find_element_for, find_elements_for, get_slider_bar_color, get_slider_title_text, get_slider_title_value, select_element_and_press_key
label_desc: Use image node_id 8 for calling the Test_Slider obj's underlying member method code with example usage: obj.test_server_callback_value_vs_value_throttled(bokeh_server_page) without return types